Hadith on the left over of a Muslim

Question

Is there any authentic Hadith which says there is shifa (cure) in the left over food and drink of a Muslim?

Answer

This is understood from a hadith in Sahih Bukhari (hadith: 5746) and Sahih Muslim (hadith: 5683) in which Rasulullah (sallallahu’alayhi wasallam) is reported to have recited the following du’a for the sick: